PROJECT SUMMARY/ABSTRACT The UCSF Center for Aging in Diverse Communities (CADC) Analysis Core (AnC), funded since 1997, has been active in national efforts to advance and propagate methods for conducting health disparities and health equity research in older adult populations. Specializing in measurement, behavioral interventions, study design, and statistical and data analysis methods, we have provided methodological training and hands-on mentoring to numerous early-career investigators (CADC Scientists) and disseminated methodological resources via publications and the CADC website. To move the field of aging-related health disparities research forward, identifying the key determinants of health disparities and their mechanisms at multiple levels is a crucial priority and critical to achieve health equity. Thus, we need to build the capacity of CADC Scientists in general and specialized methods to explicate health disparities determinants and mechanisms, design and implement interventions, and ultimately accelerate health equity. Because the complexity and diversity of data sources and methods in aging-related health disparities research are accelerating, it can be difficult for our Scientists to identify, select, and develop capacity in these general and specialized methods. The overarching objective of the CADC AnC is to continue to maximize the scientific rigor of the research conducted by our Scientists by promoting use of optimal methods and cutting-edge tools. While focusing on our Scientists’ pilot projects, we will simultaneously help them plan next steps (e.g., NIH proposals to support the next stage of their research). Given the wide array of health disparities research methods, our team-based training approach will draw on the complementary expertise of the Scientists, their CADC and non-CADC content mentors, the AnC, and other experts to optimally build Scientists’ research methods capacity tailored to the Scientists’ programs of aging-related health disparities research. Our specific aims are to: 1) provide group-based training on topics all Scientists should know regardless of their pilot study methods, including (a) established methods for aging-related health disparities research, (b) use of publicly-available datasets, and (c) relevant NIH policies; 2) provide individualized training using a team-based strategy by: (a) determining each Scientist’s needs for general and specialized methods tailored to their pilot and subsequent research and (b) creating and implementing a customized training and mentoring plan to meet those needs; and 3) continue to develop methodological resources to promote and build capacity in utilizing optimal methods in aging-related health disparities research, and disseminate them through publications and our website. By providing methodological training/mentoring and consultation, we will increase Scientists’ capacity to conduct rigorous aging-related health disparities research. By disseminating new m...